FINANCIAL INSTRUMENTS - Foreign Currency Risk Management (Details) - Foreign currency contracts - USD ($) $ in Thousands	Dec. 31, 2016	Mar. 31, 2016
Other current assets | Derivatives designated as hedging instruments
Fair Values of Derivative Instruments
Asset Derivatives	$ 7,681	$ 5,510
Other current assets | Economic hedges
Fair Values of Derivative Instruments
Asset Derivatives	20,254	17,138
Other current liabilities | Derivatives designated as hedging instruments
Fair Values of Derivative Instruments
Liability Derivatives	9,933	2,446
Other current liabilities | Economic hedges
Fair Values of Derivative Instruments
Liability Derivatives	$ 12,995	$ 18,645